Buckle - lace : lace fastening device

ABSTRACT

The invention is a device called Buckle-Lace for fastening and keeping fastened laces, ropes, strings and alike. The device includes a multiplicity of channels. Each channel has at least one resilient gate which is installed in a forward leaning diagonal direction with respect to the channel&#39;s direction. The resilient gates are installed in the channels by their rear ends while their front ends are unattached and free to move. The resilient gates have gaps between their front ends and the opposite walls of the channels. The laces pass through these gaps which are controlled by a locking mechanism. When the locking mechanism is in closed position the gaps are narrowed such that the resilient gates are squeezing the laces in the channels and act as lace ratchets i.e. allowing the laces to move forwards when pulled but block lace motion backwards. The ratchet operation enables the user to fasten the laces and they remain fastened as long as the locking mechanism is in locked position. When the locking mechanism is switched into opened position the gaps are widened and the laces are released.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of provisional patent applications:

-   Ser. No. 61/757,683 Filing Date: Jan. 28, 2013 -   Ser. No. 61/806,954 Filing Date: Apr. 1, 2013 -   Ser. No. 61/838,281 Filing Date: Jun. 23, 2013 -   Ser. No. 61/859,304 Filing Date: Jul. 29, 2013 -   Ser. No. 61/880,857 Filing Date: Sep. 21, 2013

FEDERALLY SPONSORED RESEARCH

Not Applicable

SEQUENCE LISTING OR PROGRAM

Not Applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention is related to devices for fastening and keeping fastened laces, chords, ropes, strings and alike. The device could be used mainly for fastening laces of footwear or for other applications which need fastening and easy release.

2. Prior Art

Many devices were invented for shoe lace tightening. The most successful is by Azam (U.S. Pat. No. 6,339,867) which is being widely used in fastening laces of skiing and skates boots. The tightening principle is a spring loaded gear wheel which can move in wedge shaped passage which widens forwards and narrows backwards. The laces pass through that passage and can be fastened by pulling the laces forwards which in turn pulls forwards the gear wheel towards the wider part of the passage where the laces are free to move. When the pulling stops the laces pull the gear wheel backwards, which in turn narrows the passage and blocks the laces' backwards motion. The laces can be released by pulling the gearwheel forwards with a knob. There are two small disadvantages to this invention. The device must be installed on heavy-solid footwear which eliminates its use with regular shoes and the user must constantly pull the knob to keep the releasing. Similar approach is taken by Borsol (U.S. Pat. No. 7,360,282) and by Stramare (U.S. Pat. No. 8,141,273). The lace buckle device by Li (U.S. Pat. No. 6,334,240) is used widely in coat laces. It has a lace passage controlled by a spring loaded piston that blocks lace motion when the spring is released. Except for the similar name there is no similarity to our invention. This buckle controls only one lace and does not have a ratchet operation at all. When the user wants to release or fasten the lace the user has to press the spring loaded piston, release the lace and pull at the same time. When the spring is released, the buckle returns to blocking the lace. Liu (U.S. Pat. No. 6,729,000) uses for lace tightening a teethed rotating bar. Borel (U.S. Pat. No. 6,076,241) and several others such as (U.S. Pat. No. 6,622,358) and (U.S. Pat. No. 6,192,559) use fastening devices which are based on pipes or channels which have diagonal teeth to block reverse motion of the lace. The pipes are installed on the shoes in different locations.

We have found many other inventions which dealt with the problem of lace fastening but none is similar to our invention. These inventions are listed here:

2.1 PATENTS

-   U.S. Pat. No. 8,381,362 Real based closure system -   U.S. Pat. No. 8,332,994 Shoelace with shoelace fastener -   U.S. Pat. No. 8,141,273 Shoes with directional conditioning device     for laces -   U.S. Pat. No. 8,231,074 Lace winding device for shoes -   U.S. Pat. No. 8,230,560 Fastening system for shoes -   U.S. Pat. No. 650,983 Shoe lace fastening system -   U.S. Pat. No. 8,046,937 Automatic lacing system -   U.S. Pat. No. 7,681,289 Fastener for fasting together two lace     systems -   U.S. Pat. No. 7,591,050 Footwear lacing system -   U.S. Pat. No. 7,320,161 Lace tying device -   U.S. Pat. No. 7,313,849 Fastener for lace -   U.S. Pat. No. 1,152,285 Shoe lace fastening device -   U.S. Pat. No. 7,082,701 Footwear variable tension lacing systems -   U.S. Pat. No. 6,938,308 lace securing and adjusting device -   U.S. Pat. No. 6,735,829 U shaped lace buckle -   U.S. Pat. No. 6,622,358 Lace tightening article -   U.S. Pat. No. 6,588,079 Shoelace fastening assembly -   U.S. Pat. No. 6,438,871 Footwear fastening -   U.S. Pat. No. 6,334,240 Lace buckle device -   U.S. Pat. No. 6,192,559 Shoelace fastening apparatus -   U.S. Pat. No. 6,094,787 Fastening device -   U.S. Pat. No. 5,572,777 Shoelace tightening device -   U.S. Pat. No. 5,572,774 Shoe fastening attached device -   U.S. Pat. No. 5,467,511 Shoelace fastening device -   U.S. Pat. No. 5,335,401 Shoelace tightening and locking device -   U.S. Pat. No. 5,295,315 Shoe fastening device -   U.S. Pat. No. 5,293,675 Fastener for shoelace -   U.S. Pat. No. 5,293,669 Multiuse fastener system -   U.S. Pat. No. 5,230,171 Shoe fastener -   U.S. Pat. No. 5,203,053 Shoe fastening device -   U.S. Pat. No. 5,177,882 Shoe with central fastener -   U.S. Pat. No. 5,119,539 Lace fastener -   U.S. Pat. No. 5,109,581 Device and method for securing a shoe -   U.S. Pat. No. 4,991,273 Shoe lace fastening -   U.S. Pat. No. 4,648,159 Fastener for lace or rope -   U.S. Pat. No. 4,616,432 Shoe upper with lateral fastening     arrangement -   U.S. Pat. No. 4,507,878 Fastener mechanism -   U.S. Pat. No. 4,458,373 Laced shoe and method for tying shoelaces -   U.S. Pat. No. 4,261,081 Shoelace tighetner -   U.S. Pat. No. 4,130,949 Fastening means for sports shoes -   U.S. Pat. No. 4,125,918 Fastener for lace shoes -   U.S. Pat. No. 4,071,964 Footwear fastening system -   U.S. Pat. Nos. 6,729,000; 6,339,867; 6,334,240; 5,097,573;     5,001,847; 5,477,593; 6,339,867; 6,282,817

2.2 PATENT APPLICATIONS

-   2011/0094072 -   2010/0115744 -   2009/0172929 -   2008/0250618 -   2007/0169380 -   2006/0213085 -   2005/0005477 -   2003/0226284 -   2002/0002781 -   2002/0002781

SUMMARY OF THE INVENTION

The invention is a device called Buckle-Lace: Lace Fastening and keeping fastened: laces, ropes, strings and alike. The device is small in dimensions and looks like a buckle. It can be used to fasten shoe laces simply by inserting the shoe laces into the device and pulling them. The locking mechanism of the device has two positions: “locked” and “opened”. In the locked position the device works as a laces ratchet i.e. allowing the laces to be pulled forwards but blocking any lace motion backwards. After the user fastened the laces they remain fastened until the locking mechanism is switched into the opened position. The principle of operation of the device is by having resilient gates which are installed diagonally in channels in which the laces are passing. The laces pass in gaps which are controlled by the locking mechanism. When the locking mechanism is in closed position the gaps are narrowed such that the resilient gates are squeezing the laces in the channels and act lace as ratchets. When the locking mechanism is switched into opened position the gaps are widened and the laces are released.

INTRODUCTION: DEVICE STRUCTURE AND METHOD OF OPERATION

The Buckle-Lace (BuckLace)-laces Fastening Device (BLFD) is a device which enables to fasten shoe laces and any other laces, chords, ropes, strings and alike. In the following sections we shall refer to: shoe laces, laces, chords, ropes, strings and alike by the term: “lace”. In the specification, I shall use the word “each” to describe various properties of multiplicity of elements of the invention such as: mechanisms, Gates, gaps etc. However, I will repeat the same descriptions to refer also to singles of the same elements. The BLFD has channels in which the laces are passing. The BLFD has a locking mechanism with two positions: “opened” and “closed”. In the “closed” position, the locking mechanism enables the user to fasten the laces by pulling them and also keeps the laces fastened when the pulling stops. In the opened position the locking mechanism enables to release the previously fastened laces.

The modus operandi of the BLFD's locking mechanism is to control the width of the gaps through which the laces are passing. These gaps exist between the front ends of Gates which are installed in each cannel and the walls of the channels which are opposite to the front ends. What it means is that each Gate has a front end which has a small gap between it and an opposite channel wall. The locking mechanism is able to widen or narrow all the gaps. When the locking mechanism narrows the gaps it activates in each Gate a ratchet structure which allows lace motion in forward direction but preventing lace motion backwards. We shall explain the principle of operation of the ratchet structure in following paragraphs. When the user of the BLFD switches the locking mechanism into the opened position it widens the gaps. When the gaps are widened they no longer have ratchet structures and the laces are released because they are free to move backwards as well as forwards.

The Buckle-Lace (we name it: BuckLace) Fastening Device (BLFD) has laces which pass via channels. Each channel must have a wall opposite to the front ends of the Gates installed in the channel. But the other walls are optional: an optional attachment wall (or a post) and perhaps side walls depending on the channel's shape. The walls could be curved or straight depending on each application requirements. Each of the Gates installed in the channels of the BuckLace Fastening Device (BLFD) has a 3D shape which could be enveloped by a convex hull which has an approximate 3D shape of a planar plate wherein the plate's width and length are substantially greater than its thickness. We prefer to define the Gates' shapes by their convex hulls because it allows the Gates to have a variety of shape variations yet all of these variations are substantially flat because they are constrained by convex hulls which have approximate shapes which resemble planar plates.

Each of the Gates has a front end and a rear end. Each of the Gates is installed in the channel in a forward leaning diagonal direction with respect to the forward direction of the channel. The forward direction is defined as the direction from the entry opening of the channel to the exit opening of the channel. A definition of forward leaning diagonal direction of the Gate is that a Gate with a forward leaning diagonal direction has the following properties: the front end of the Gate is closer to the exit opening of the channel than the rear end and also the front end of the Gate is closer to the opposite wall than the rear end of the Gate (see in FIGS. 1 and 2). The Gate has a front end which is quite flat and thin (like a dull blade) and a rear end which is approximately parallel to the front end but does not need to be as thin. The locking mechanism of the BLFD has two positions. In the closed position, the locking mechanism narrows the gap in which the lace passes. The Gap is narrowed such that the lace is squeezed between the Gate's front end and the Channel's opposite wall. In the opened position, the gap is widened more than the lace's width.

We propose two options to the operation and structure of the Gates in the BLFD. The first option, we name as: “Resilient Gate” and the second option we name as: “Solid Gate”. The Resilient Gate (named as: “flexible member” in our previous Provisional patents on Lace fastening devices) can be bended by forces applied to their front end and they return to their original shapes when the forces subside or are removed. The Resilient Gates are made of resilient and flexible materials such as: steel, Teflon, bronze, etc. The Resilient Gates have flat, planar structures which enables them to bend forward and backward perpendicularly to the plane approximating their flat structure. Each Resilient Gate is installed with its plane in forward leaning diagonal direction with respect to the channel's forward direction, which usually coincides with the direction of the lace passing through the channel (see in FIGS. 1, 2, 3, 4). Usually the lace direction is parallel to opposite wall on which it lies. Each Resilient Gate has two ends. The rear end of each Resilient Gate is attached to a post which is connected to the channel. We shall name them henceforward as “posts”. Each Resilient Gate has a gap between its front end and the wall opposite to it (named as “opposite wall”).

Since each Resilient Gate has only one end which is attached to a post, their front end is free to move when the Resilient Gate bends. Due to the forward leaning diagonal installation of the resilient Gates, their front end is in forward direction with respect to their rear end. Due to the resilient Gates' forward leaning diagonal positions in the channels, when a resilient Gate is bent its unattached front end is free to move in the channel either in a combined forwards plus lateral inwards direction (inwards direction is direction away from the opposite wall) or in a combined backwards plus laterally outwards direction i.e. towards the opposite wall. Thus, when the Gates' front ends are dragged forwards they also move laterally inwards, i.e. away from their opposite walls. This motion widens the gaps between their front ends and their opposite walls and allows the lace to move forward. On the other hand, when the front ends are dragged backwards, they also move laterally outwards, i.e. towards their opposite walls. This motion narrows the gaps between their front ends and their opposite walls. The narrowed gap blocks the backwards motion of the laces.

The principle of operation of the ratchet structure is founded on these two combined motions. The locking mechanism in the closed position is narrowing the gaps such that the laces are squeezed between the Gates' front ends and their opposite walls. When the laces are dragged forward, they drag in forward direction also the front ends of the Resilient Gates because the laces are pressed against their front ends. This forward motion of the front ends is combined with lateral inwards motion component, which moves the front ends away from their opposite walls. The motion away from their opposite walls widens their Gaps, thus allowing even easier additional lace motion forwards. When the laces move in forwards direction the laces are in fastening mode.

On the other hand, when the locking mechanism is in closed position and when the laces are dragged backwards they drag also the front ends in combined backwards and outwards directions. The front ends' motion outwards (i.e. motion towards their opposite walls) squeezes the laces even more against their opposite walls and this locks the laces, preventing any additional motion backwards. So, this is the principle of the ratchet structure: allowing laces motion only forwards and blocking their motion backwards.

However, when the locking mechanism is in opened position, it widens the gaps such that the laces are not squeezed between their front ends and their opposite walls. Thus, in the opened position the ratchet structures are eliminated and the laces are free to move backwards and forwards. So switching the locking mechanism from closed position to opened position switches the BLFD from fastening mode into releasing its laces.

The second Gate option is named as “Solid Gate”. Solid Gates could be made of rigid materials such as: steel, brass, rigid plastics, etc. Solid Gates also have straight, sharp and narrow front ends which also squeeze the laces in gaps against their opposite walls (see in FIGS. 3 and 4). But the motion of their front ends are achieved not by bending but by rotation around pivots installed in the channels. Each Solid Gate is mounted on a pivot near the Solid Gate's rear end and the pivot axis is parallel to its Gate's front end. Each Solid Gate is installed in a forward leaning diagonal direction with respect to the channel's forward direction such that its front end is nearer than its rear end to the exit opening of the channel and also its front end is nearer than its rear end to its opposite wall. Each Solid Gate is equipped with a spring which has a bias which rotates the Gate's front end towards its opposite wall (i.e. in combined backwards and outwards directions), thus narrowing the gap.

The locking mechanism of the Solid Gates also has closed and opened positions. In the closed position, the locking mechanism disengages from Solid Gates and allows the Solid Gates' springs to squeeze the laces in their gaps. When the laces are being squeezed, the Solid Gate has a ratchet structure on the laces the same way as the Resilient Gates' ratchet structure. In the opened position, the locking mechanism rotates the Solid Gates in combined forwards and inwards directions i.e. against their springs' bias. This widens the gaps and eliminates the ratchet structure. In the opened position the laces are released since they are free to move in both forwards and backwards directions.

The locking mechanism of the BLFD in the Resilient Gate option is actually a mechanism which widens or narrows the front ends' gaps by either by moving the Gates' posts with respect to their opposite walls, or by moving the opposite walls with respect to their Gates' posts. In the first option, i.e. the Resilient Gate option of this invention we describe an embodiment in which the locking mechanism is moving the Gates' posts. The locking mechanism of the BLFD has two positions. In the closed position the channels are narrowed such that the gaps between the front ends of the Resilient Gates with their opposite walls become very narrow and the laces are squeezed between the Resilient Gates' front ends and their opposite walls. In the opened position of the locking mechanism moves the Gates' front ends away from the opposite walls such that the gaps between the front ends of the Resilient Gates and their opposite walls are widened enough such that the laces can move freely in the gaps.

Each Resilient Gate has a flexible and resilient structure such that when it bends, its front end can move diagonally in two directions: either in a combined forwards direction plus laterally inwards direction (away from the opposite walls) or in a combined backwards direction plus laterally outwards direction (i.e. towards the opposite wall). When the BLFD is in the “closed” position and the laces are moved forward, the front end of each Resilient Gate is also dragged forwards because each front end is touching the laces. Since the Resilient Gates are installed diagonally, when their front ends move forwards they also move laterally—away from the opposite walls thereby widening their gaps to their opposite walls. A wider gap allows the lace to move more freely in forward direction. When the BLFD is in the closed position and the laces are moved in backwards direction they drag the front end of each Resilient Gate backwards. This narrows the front end's gap since each Resilient Gate, which is installed diagonally, also moves laterally—i.e. towards the opposite wall when its front end moves backwards. Thus, a backwards movement of the lace is very limited because it only narrows the gap and squeezes the lace in the gap even more. Hence, when the locking mechanism is in closed position, the BLFD is a ratchet fastening device because laces that were pulled in forward direction for fastening remain fastened when the pulling stops because their motion in backwards direction is blocked.

When the user wants to release fastened laces all that is required is to switch the locking mechanism into an opened position. In the opened position the gaps between the Resilient Gates front ends and their opposite walls are widened and the laces can move freely in the channel because they are not blocked by the Resilient Gates since their gaps from their opposite walls are larger than the laces' widths. Thus, switching the locking mechanism into opened position releases fastened laces immediately.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIGS. 11, 12, 13, 14, we present drawings of simplified cross sections of channels with two kinds of Gates: Resilient Gate and Solid Gate in order to explain their principles of operation. The locking mechanism described in FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9 is absent in FIGS. 11, 12, 13, 14 because they are purposely simplified and drawn primarily with the objective to explain the operation principles of the ratchet structure of the BLFD for Resilient and Solid Gates. FIGS. 11 and 12 describe a cross section of a channel with a Resilient Gate in closed and opened positions. FIGS. 13 and 14 illustrate a cross section of a channel with a Solid Gate in closed and opened positions.

In FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9 we describe an embodiment of a two-channel BLFD with Resilient Gates. However, other embodiments could have other numbers of channels, laces, Resilient Gates, etc. FIGS. 1 and 2 describe by isometric drawing the upper and the lower parts of a two-channel BLFD. FIG. 3 describes a projection of the BLFD in an opened position. FIG. 4 illustrates an isometric drawing of the BLFD in an opened position of the locking mechanism. FIG. 4 also includes two laces installed in the BLFD's two channels. FIG. 5 describes the same two-channel BLFD in the closed position of the locking mechanism, including two laces as well. FIG. 6 illustrates 3 projections of the upper part of the BLFD. FIG. 7 illustrates 3 projections of the lower part of the BLFD. FIG. 8 describes a cross section of the BLFD in the closed position. FIG. 8 is quite important for the understanding of the lace fastening mechanism of the BLFD. FIG. 9 describes a cross section of the BLFD in the opened position. FIG. 9 is quite important for the understanding of the lace releasing operation by the locking mechanism of the BLFD.

DETAILED DESCRIPTION OF THE DRAWINGS AND MODUS OPERANDI

In FIGS. 11, 12, 13, 14, we present drawings of simplified cross sections of channels with two kinds of Gates: Resilient Gate and Solid Gate in order to explain their principles of operation. The locking mechanism described in FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9 is absent in FIGS. 11, 12, 13, 14 because they are purposely simplified and drawn primarily with the objective to explain the operation principles of the ratchet structure of the BLFD for Resilient and Solid Gates. FIGS. 11 and 12 illustrate a cross section a channel 1 of a BLFD with one Resilient Gate 6. In FIG. 11, the BLFD with its locking mechanism is in closed position in which the gap 14 between the front end 6B of the Resilient Gate 6 and the opposite wall 1A is narrower than the lace's width and therefore the lace 10 is squeezed between the front end 6B of the Resilient Gate 6 and the opposite wall 1A. As can be observed from FIG. 11, the Resilient Gate 6 is bending forward as a consequence of the squeezing force applied on the lace 10. The rear end 6B of the Resilient Gate 6 is attached to the channel by a post 15. The Resilient Gate has a flat structure and is installed in forward leaning diagonal direction in which its front end 6B is placed at a forward location relative to the location of its rear end 6A. Also, its front end 6B is nearer to the opposite wall 1A than its rear end 6A. The forward direction in the channel is denoted by the arrow 17. At the locked position of the locking mechanism the lace can be moved only forwards and its backwards motion is blocked.

FIG. 12 describes the BLFD with one Resilient Gate 3 with its locking mechanism in an opened position in which the gap 14 between the front end 6B of the Resilient Gate 6 and the opposite wall 1A is wider than the lace 10 width and therefore the lace 10 is not squeezed between the front end 6B of the Resilient Gate 6 and the opposite wall 1A. Thus, at the opened position of the BLFD's locking mechanism, the lace can move freely in forward and backward directions.

When the BLFD is at the closed position, as illustrated in FIG. 11, and when the lace 10 is pulled to the right (i.e. in forward direction 17) the front end 6B of the Resilient Gate 6 also is dragged forwards. Since the Resilient Gate 6 is installed in a forward leaning diagonal orientation where its front end 6B is in forward location relative to its rear end 6A, dragging forwards the front end 6B also moves it inwards i.e. away from the opposite wall 1A which in turn widens its gap 14 to its opposite wall 1A. This enables the lace 10 to move forwards to the right.

On the other hand, when the lace 10 is pulled to the left (i.e. in backwards direction in channel 1) the front end 6B of the Resilient Gates 6 is dragged also backwards. Since the Resilient Gate 6 is installed in a forward leaning diagonal orientation where its front end 6B is in forward location relative to its rear end 6A, dragging backwards the front end 6B also moves it outwards i.e. towards the opposite wall 1A which in turn narrows its gap 14 to its opposite wall 1A. Narrowing the gap 14 blocks the lace 10 motion backwards (to the left). Due to this ratchet structure, the lace 6 can be fastened by pulling it forwards (to the right) but it keeps being fastened when the pulling stops because its movement backwards (to the left) is blocked when the locking mechanism of the BLFD is in closed position. The lace 10 can be released when the locking mechanism is switched to opened position. At the opened position (described in FIG. 12) the gap 14 of the front end 6B of the Resilient Gate 6 becomes wider than the width of the lace 10 and the lace 10 is free to move in both directions.

FIGS. 13 and 14 illustrate a cross section a channel 1 of a BLFD with one Solid Gate 12. In FIG. 13, the BLFD with its locking mechanism is in closed position in which the gap 14 between the front end 6B of the Solid Gate 12 and the opposite wall 1A is narrowed and therefore the lace 10 is squeezed between the front end 6B of the Solid Gate 12 and the opposite wall 1A. As can be observed from FIG. 13, at the closed position, the locking mechanism of the BLFD has rotated the Solid Gate 12 in clockwise direction around its pivot 13. As consequence, the Solid Gate 12 narrows the gap 14 between its front end 6B and its opposite wall 1A which in turn applies a squeezing force on the lace 10. The rear end 6A of the Solid Gate 12 is attached to a pivot 13 which enables the Solid Gate to rotate around its pivot. The Solid Gate has a flat structure with narrow front end 6B and is installed diagonally where its front end 6B is placed at a forward location relative to the location of its rear end 6A. The forward direction in the channel is denoted by the arrow 17. The Solid Gate 12 does not have to be resilient and can be manufactured from solid material such as steel, brass, plastics, etc.

FIG. 14 describes the BLFD with one Solid Gate 12 with its locking mechanism in an opened position in which the Solid Gate 12 is rotated around its pivot 13 in counterclockwise direction. As a result, the gap 14 between the front end 6B of the Resilient Gate 12 and the opposite wall 1A is wider than the lace 10 width and therefore the lace 10 is not squeezed between the front end 6B of the Solid Gate 12 and the opposite wall 1A. Thus, at the opened position of the BLFD's locking mechanism, the lace can move freely in forward and in backward directions.

When the locking mechanism of the BLFD is at the closed position, as illustrated in FIG. 13, and when the lace 10 is pulled to the right (i.e. in forward direction 17) the front end 6B of the Solid Gate 12 also is dragged forwards. Since the Solid Gate 12 is installed in a forward leaning diagonal orientation where its front end 6B is in forward location relative to its rear end 6A, dragging forwards the front end 6B also rotates it in counterclockwise direction around its pivot 13. Front end 6B rotation in counterclockwise direction also moves it away from the opposite wall 1A which in turn widens its gap 14 to its opposite wall 1A. This enables the lace to move forwards to the right.

On the other hand, when the lace 10 is pulled to the left (i.e. in backwards direction in channel 1) the front end 6B of the Solid Gate 12 is dragged also backwards. Since the Solid Gate 12 is installed in a forward leaning diagonal orientation where its front end 6B is in forward location relative to its rear end 6A, dragging backwards the front end 6B also rotates it in clockwise direction around its pivot 13. Front end 6B rotation in clockwise direction also moves it towards the opposite wall 1A which in turn narrows its gap 14 to its opposite wall 1A. This blocks the lace 10 and prevents it from moving backwards to the left. Due to this ratchet structure, the lace 10 can be fastened by pulling it forwards (to the right) but it keeps being fastened when the pulling stops because its movement backwards (to the left) is blocked when the locking mechanism of the BLFD is in closed position. The lace 10 can be released when the locking mechanism is switched to an opened position. At the opened position the Solid Gate is rotated in counterclockwise direction by the locking mechanism as a result, the gap 14 at the front end 6B of the Solid Gate 12 becomes wider than the width of the lace 10 and the lace 10 is free to move in both directions.

We want to comment here that it is possible to improve the blocking of laces 10 motions in backwards directions, by adding also prostrations 1B (convexities) on the opposite walls 1A in front of the front ends 6B. These prostrations 1B are drawn in FIGS. 11,12,13,14. These convexities 1B enhance the lace 10 blocking force because they bend the squeezed laces 10 and thus increase the holding force of the Resilient Gates 6 and the Solid Gates 12.

The upper part 8 of the BLFD illustrated in FIG. 1, has two circular holes 3 which serve as bearings which support the shaft 11. The lower part 9, described in FIG. 2, also has a circular hole 3 in which the shaft 11 is installed when the two parts are assembled. This conFiguration allows the upper part 8 to rotate relative to the lower part 9. The upper part 8 can swivel relative to the lower part in a limited angle of rotation of about 15 degrees. By changing the angle of rotation, the locking mechanism of the BLFD is switched between opened and closed positions. When the upper part 8 is rotated to a parallel position relative to the lower part 9 as illustrated in FIGS. 5 and 8, the BLFD is in the closed position. In the closed position, the attachment planar wall 8A and its opposite walls 1A and 2A are parallel. When the upper part 8 swivels in counterclockwise direction from the closed position at about 15 degrees, it moves to the opened position as described in FIG. 9. The upper part 8 in FIG. 1, has two Resilient Gates 6 which are installed in a forward leaning diagonal position with respect to their attachment wall 8A. The plane 8A serves as the attachment walls of both channels 1 and 2 and the rear ends 6A of the Resilient Gates 6 are attached to the attachment wall 8A. The front ends 6B of the Resilient Gates 6 are free to move when the Resilient Gates 6 are bent. The two Resilient Gates 6 are fitted into the two channels 1 and 2 of the lower part 9 when the upper and the lower parts are in the closed position. As can be observed in FIGS. 6, 8 and 9 that the Resilient Gates 6 have flat structures and are installed in a forward leaning diagonal direction with respect to the forward direction of the channels 1 and 2 which is marked by arrow 17 in FIGS. 1, 5, 6, 8, 9.

FIGS. 3, 4 and 9 describe the BLFD with its locking mechanism in opened position. FIGS. 5 and 8 describe the BLFD in the closed position. It can be observed that in the opened position, the attachment planar wall 8A of the upper part 8 has been rotated to about 15 degrees with respect to the opposite walls 1A and 2A of the lower part 9. In this position, the front ends 6B of the Resilient Gates 6 have large gaps 14 with their opposite walls 1A and 2A. At this position the laces 10 are free to move in forward and reverse directions.

When the BLFD is at the closed position, as illustrated in FIGS. 5 and 8, when the laces 10 are pulled to the right (i.e. in forward direction 17 in channels 1 and 2) the front ends 6B of the Resilient Gates 6 are dragged also to the right. Since the Resilient Gates 6 are installed diagonally with respect to attachment wall 8A and opposite walls 1A and 2A, dragging the front ends 6B of the Resilient Gates 6 to the right widens their gaps 14 to their opposite walls 1A and 2A. This enables the laces to move forwards to the right.

On the other hand, when the laces 10 are pulled to the left (i.e. in backwards direction in channels 1 and 2) the front ends 6B of the Resilient Gates 6 are dragged also to the left. Since the Resilient Gates 6 are installed diagonally with respect to attachment wall 8A and opposite walls 1A and 2A, dragging the front ends 6B of the Resilient Gates 6 to the left narrows their gaps 14 and blocks the laces 10 motion to the left. Due to this ratchet structure, the laces 10 can be fastened by pulling them to the right but they keep being fastened when the pulling stops because their movement backwards (to the left) is blocked at the BLFD closed position. The laces 10 can be released when the locking mechanism is switched to opened position by rotating the upper part in FIG. 5 counterclockwise. At the opened position the gaps 14 of the front ends 6B of Resilient Gates 6 become wider than the widths of the laces 10 and the laces 10 are free to move in both directions.

To improve the blocking of laces 10 motions in the reverse directions, we added also the prostrations 1B and 2B in the opposite walls 1A and 2A respectively. The convexities 1B and 2B are opposite to Resilient Gates front ends 6B. These convexities enhance the blocking because they bend the squeezed laces 10 (as seen in FIG. 8) and thus increase the holding force of the Resilient Gates.

FIGS. 1, 3, 4, 5 and 6 describe the locking mechanism. The locking mechanism includes a lock 5 made of resilient material and a lever 7. The lock 5 is L shaped and its long arm is partially attached to the upper part 8. Pressing the lever 7 bends the lock 5 outwards. In the closed position the lock 5 is inserted into the recess 4 in the lower part 9. When the lock 5 is in the recess 4 it locks the upper part such that its planar attachment wall 8A is parallel to the opposite walls 1A and 2A. In this position the BLFD is in closed position and the user can fasten the laces 10 by pulling them in forward direction 17 and they remain fastened.

When the user wants to release the fastened laces, the user presses on the lever 7 which bends the lock 5 outwards and removes it from the recess 4. When the lock 5 is removed from the recess 4 it unlocks the upper part from the lower part and allows the upper part to swivel upwards about 15 degrees. When the upper part is swiveled it widens the gaps 14 between the front ends 6B of the Resilient Gates 6 and their opposite walls 1A and 1B. In this position the gaps are wider than the widths of the laces 10. As a result, the BLFD moves into its opened position and the laces 10 are released. 

1. A buckle-lace fastening device for fastening and keeping fastened at least one lace; comprising a multiplicity of channels; wherein each said channel has an entry opening and an exit opening; wherein forward direction in each said channel is defined as the direction from said entry opening to said exit opening; wherein backward direction in each said channel is defined as the direction from said exit opening to said entry opening; wherein each said channel has a resilient gate; wherein said resilient gate is made of resilient and flexible material; wherein said resilient gate has a rear end and a front end; wherein said resilient gate is attached to said channel by attaching its said rear end to a post which is connected to said channel and leaving its said front end unattached; wherein said channel has a wall opposite to said front end, which is named as: opposite wall; wherein said resilient gate is installed at a predetermined diagonal direction with respect to said forward direction; wherein at said diagonal direction said front end is closer to said exit opening than said rear end; wherein at said diagonal direction said front end is closer to said opposite wall than said rear end; wherein said resilient gate said front end has a gap between said front end and its said opposite wall; wherein a force applied to said front end in said forward direction can move said front end in combined forward-lateral direction by bending said resilient gate; wherein a force applied to said front end in said backward direction can move said front end in combined backward-lateral direction by bending said resilient gate; wherein said gap can be widened and narrowed by a locking mechanism; wherein said locking mechanism has an opened position and a closed position; wherein at said opened position said gap is wide enough to allow said lace passing through said gap to move freely both in said forward direction and in said backward direction; wherein at said closed position said gap is narrower than said width of said lace; thereby said lace passing through said gap is being squeezed between said front end of said resilient gate and said opposite wall.
 2. Claim number 1 wherein when said locking mechanism is in said closed position, then moving said lace in forward direction also drags forwards said front end which is squeezing said lace; wherein dragging forward said front end causes said front end to move in combined forwards plus laterally inwards direction; wherein said laterally inwards motion component of said front end moves said front end away from its said opposite wall thereby widening its said gap and allowing easier forward motion of said lace; wherein when said locking mechanism is in said closed position, then moving said lace in said backward direction also drags backwards said front end which is squeezing said lace; wherein dragging backwards said front end causes said front end to move in combined backwards plus laterally outwards direction; wherein said laterally outwards motion component of said front end moves said front end towards its said opposite wall thereby narrowing its said gap; thereby blocking of any additional backwards motion of said lace; wherein when said locking mechanism is in said opened position, said gap is wider than the width of said lace; thereby said lace passing in said gap can move freely both in said forward direction and in said backward direction.
 3. Claim number 1, wherein each said opposite wall has a convexity which enables additional bending of said lace when said lace is squeezed between said front end of said resilient gate and its said opposite wall; thereby increasing said lace's motion blocking force when said lace is pulled in said backwards direction.
 4. Claim number 1 wherein each said opposite wall has a concavity that enables additional bending of said lace when said lace is squeezed between said front end of said resilient gate and its said opposite wall; thereby increasing said lace's motion blocking force when said lace is pulled in said backwards direction.
 5. Claim number 1 wherein said locking mechanism is narrowing said gap by moving its said front end of said resilient gate towards its said opposite wall; wherein said locking mechanism is widening said gap by moving its said front end of said resilient gate away from its said opposite wall.
 6. Claim number 5, wherein said locking mechanism is narrowing said gap by moving its said front end of said resilient gate towards its said opposite wall by turning said resilient gate; wherein said locking mechanism is widening said gap by moving its said front end of said resilient gate away from its said opposite wall by turning said resilient gate.
 7. Claim number 2, wherein said resilient gate is made of a resilient flat plate.
 8. A buckle-lace fastening device for fastening and keeping fastened at least one lace; comprising a multiplicity of channels; wherein each said channel has an entry opening and an exit opening; wherein forward direction in each said channel is defined as the direction from said entry opening to said exit opening; wherein backward direction in each said channel is defined as the direction from said exit opening to said entry opening; wherein each said channel has a multiplicity of resilient gates; wherein each said resilient gate is made of resilient and flexible material; wherein each said resilient gate has a rear end and a front end; wherein each said resilient gate is attached to said channel by attaching its said rear end to a post which is connected to said channel and leaving its said front end unattached; wherein said channel has a wall opposite to each said front end, which is named as: opposite wall; wherein each said resilient gate is installed at a predetermined diagonal direction with respect to said forward direction; wherein at said diagonal direction said front end is closer to said exit opening than said rear end; wherein at said diagonal direction said front end is closer to said opposite wall than said rear end; wherein each said resilient gate said front end has a gap between said front end and its said opposite wall; wherein a force applied to said front end in said forward direction can move said front end in combined forward-lateral direction by bending said resilient gate; wherein a force applied to said front end in said backward direction can move said front end in combined backward-lateral direction by bending said resilient gate; wherein each said gap can be widened and narrowed by a locking mechanism; wherein said locking mechanism has an opened position and a closed position; wherein at said opened position each said gap is wide enough to allow said lace passing through said gap to move freely both in said forward direction and in said backward direction; wherein at said closed position each said gap is narrower than said width of said lace; thereby said lace passing through said gap is being squeezed between said front end of said resilient gate and said opposite wall.
 9. Claim number 8 wherein when said locking mechanism is in said closed position, then moving said lace in forward direction also drags forwards said front end which is squeezing said lace; wherein dragging forward said front end causes said front end to move in combined forwards plus laterally inwards direction; wherein said laterally inwards motion component of said front end moves said front end away from its said opposite wall thereby widening its said gap and allowing easier forward motion of said lace; wherein when said locking mechanism is in said closed position, then moving said lace in said backward direction also drags backwards said front end which is squeezing said lace; wherein dragging backwards said front end causes said front end to move in combined backwards plus laterally outwards direction; wherein said laterally outwards motion component of said front end moves said front end towards its said opposite wall thereby narrowing its said gap; thereby blocking of any additional backwards motion of said lace; wherein when said locking mechanism is in said opened position, each said gap is wider than the width of said lace; thereby said lace passing in said gap can move freely both in said forward direction and in said backward direction.
 10. Claim number 8, wherein each resilient gate has a convexity on its said opposite wall; said convexity enables additional bending of said lace when said lace is squeezed between said front end of said resilient gate and its said opposite wall; thereby increasing said lace's motion blocking force when said lace is pulled in said backwards direction.
 11. Claim number 8, wherein each resilient gate has a concavity on its said opposite wall; said concavity enables additional bending of said lace when said lace is squeezed between said front end of said resilient gate and its said opposite wall; thereby increasing said lace's motion blocking force when said lace is pulled in said backwards direction.
 12. Claim number 8 wherein said locking mechanism is narrowing each said gap by moving each said front end of each said resilient gate towards their said opposite walls; wherein said locking mechanism is widening each said gap by moving each said front end of each said resilient gate away from their said opposite walls.
 13. Claim number 12, wherein said locking mechanism is narrowing each said gap by moving each said front end of each said resilient gate towards their said opposite walls by turning each said resilient gate; wherein said locking mechanism is widening each said gap by moving each said front end of each said resilient gate away from their said opposite walls by turning each said resilient gate.
 14. Claim number 9, wherein each said resilient gate is made of a resilient flat plate.
 15. A buckle-lace fastening device for fastening and keeping fastened at least one lace; comprising a channel; wherein said channel has an entry opening and an exit opening; wherein forward direction in said channel is defined as the direction from said entry opening to said exit opening; wherein backward direction in said channel is defined as the direction from said exit opening to said entry opening; wherein said channel has a resilient gate; wherein said resilient gate is made of resilient and flexible material; wherein said resilient gate has a rear end and a front end; wherein said resilient gate is attached to said channel by attaching its said rear end to a post which is connected to said channel and leaving its said front end unattached; wherein said channel has a wall opposite to said front end, which is named as: opposite wall; wherein said resilient gate is installed at a predetermined diagonal direction with respect to said forward direction; wherein at said diagonal direction said front end is closer to said exit opening than said rear end; wherein at said diagonal direction said front end is closer to said opposite wall than said rear end; wherein said resilient gate said front end has a gap between said front end and its said opposite wall; wherein a force applied to said front end in said forward direction can move said front end in combined forward-lateral direction by bending said resilient gate; wherein a force applied to said front end in said backward direction can move said front end in combined backward-lateral direction by bending said resilient gate; wherein said gap can be widened and narrowed by a locking mechanism; wherein said locking mechanism has an opened position and a closed position; wherein at said opened position said gap is wide enough to allow said lace passing through said gap to move freely both in said forward direction and in said backward direction; wherein at said closed position said gap is narrower than said width of said lace; thereby said lace passing through said gap is being squeezed between said front end of said resilient gate and said opposite wall.
 16. Claim number 15 wherein when said locking mechanism is in said closed position, then moving said lace in forward direction also drags forwards said front end which is squeezing said lace; wherein dragging forward said front end causes said front end to move in combined forwards plus laterally inwards direction; wherein said laterally inwards motion component of said front end moves said front end away from its said opposite wall thereby widening its said gap and allowing easier forward motion of said lace; wherein when said locking mechanism is in said closed position, then moving said lace in said backward direction also drags backwards said front end which is squeezing said lace; wherein dragging backwards said front end causes said front end to move in combined backwards plus laterally outwards direction; wherein said laterally outwards motion component of said front end moves said front end towards its said opposite wall thereby narrowing its said gap; thereby blocking of any additional backwards motion of said lace; wherein when said locking mechanism is in said opened position, each said gap is wider than the width of said lace; thereby said lace passing in said gap can move freely both in said forward direction and in said backward direction.
 17. Claim number 15 wherein said locking mechanism is narrowing said gap by moving said front end of said resilient gate towards its said opposite wall; wherein said locking mechanism is widening said gap by moving said front end of said resilient gate away from its said opposite wall.
 18. Claim number 16, wherein said opposite wall has a convexity which enables additional bending of said lace when said lace is squeezed between said front end of said resilient gate and its said opposite wall; thereby increasing said lace's motion blocking force when said lace is pulled in said backwards direction.
 19. Claim number 17, wherein said locking mechanism is narrowing said gap by moving its said front end of said resilient gate towards its said opposite wall by turning said resilient gate; wherein said locking mechanism is widening said gap by moving its said front end of said resilient gate away from its said opposite wall by turning said resilient gate.
 20. Claim number 16, wherein said resilient gate is made of a resilient flat plate. 